Preflop: That's also why I don't like 3betting actually here, since he has so small PFR and even from UTG it's likely even smaller. We might be easily against KK+ which is gonna 4bet us and we would be in ugly shape against them. Therefore I might even sometimes prefer just Calling here and playing postflop against that player.

As playedPostflop: Somehow I would as well him put a very strong hand here when he picks such a line. I guess only reasonable hand which we might beat is JJ, not really sure if he even would Call with TT while being that tight. But once again why did you even 3bet, if you not really planning to go broke here on such a river, which is pretty good for us.